CN112935741A - Lifting device with self-locking function - Google Patents
Lifting device with self-locking function Download PDFInfo
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- CN112935741A CN112935741A CN201911266477.3A CN201911266477A CN112935741A CN 112935741 A CN112935741 A CN 112935741A CN 201911266477 A CN201911266477 A CN 201911266477A CN 112935741 A CN112935741 A CN 112935741A
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- self
- locking
- control valve
- synchronizing
- lifting device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses a lifting device with a self-locking function, which comprises a bearing platform, a lifting cylinder, a self-locking assembly, a fixed mounting frame, a control valve, an airflow control piece and a synchronizing device, wherein two sides of the synchronizing device are respectively contacted with the airflow control piece and a sliding rod, and the synchronizing device can be switched between a first working position and a second working position. The lifting platform is lifted under the control of the air circuit, and the synchronous matching of the self-locking device and the control valve is controlled by the synchronizing device, so that when the lifting platform is lifted, a protection device hooks the lifting platform after a specific height is reached, and the stability of the platform is kept; when the platform needs to descend, the locking of the self-locking device to the platform can be released while the air pressure can be removed through the synchronizing device, the platform descends stably and reliably, the control is convenient, and the labor cost and time are saved.
Description
Technical Field
The invention relates to the field of conveying and positioning, in particular to a lifting device with a self-locking function.
Background
In order to disassemble and assemble a product having a complicated structure, it is necessary to mount a case, a frame or parts of the product on a lifting platform by lifting to a specific height for rapid loading and unloading. In the prior art, a motor or an air cylinder is often adopted to drive the lifting platform to ascend or descend. Compared with a motor, the air cylinder can reliably work under severe conditions, is simple to operate and can basically realize maintenance-free. The cylinder is good at reciprocating linear motion, and is particularly suitable for linear conveying of workpieces which are the most transmission requirements in industrial automation. Further, stable speed control can be simply achieved by adjusting only the one-way throttle valves installed at both sides of the cylinder, which also becomes the largest feature and advantage of the cylinder driving system. Therefore, for users without multi-point positioning requirements, the cylinder is most preferred from the aspect of convenience in use.
However, when the air cylinder drives the lifting platform, in order to maintain the air cylinder at a specific height, stable air pressure needs to be continuously supplied to the air path, and when the air path has a problem, the lifting platform inevitably drops suddenly due to unstable air pressure, which causes damage to a product to be assembled or disassembled, so that the lifting device which can stably maintain the height of the lifting platform when reaching a specific position under the condition of driving the air cylinder needs to be provided.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a lifting device with a self-locking function, which solves the problem in the prior art that a platform falls off due to a gas path problem when a lifting platform is driven to a specific position by a cylinder.
The technical scheme of the invention is realized as follows:
a lifting device with a self-locking function specifically comprises:
the bearing platform is used for bearing the piece to be lifted;
the lifting cylinder comprises a cylinder body and a piston rod, and one end of the piston rod is fixedly connected with the bearing platform;
the self-locking assembly comprises a sliding rod, a self-locking elastic piece, a locking piece and a connecting piece, wherein the locking piece comprises an installation part and a clamping part, the installation part is fixedly connected with the sliding rod, and one end of the self-locking elastic piece is connected with the installation part; the connecting piece is fixedly connected with the bearing platform, and a clamping groove matched with the clamping part is formed in the connecting piece;
the sliding rod and the fixed mounting frame are arranged in a relatively sliding mode, and the other end of the self-locking elastic piece is connected with the fixed mounting frame;
a control valve having a gas passage therein;
the air flow control part is protruded out of the control valve, so that the air channel is communicated with the lifting cylinder, the piston rod is pushed to enable the bearing platform to ascend, and the air channel is not communicated with the lifting cylinder when the control valve is screwed in;
and two sides of the synchronizing device are respectively contacted with the airflow control piece and the sliding rod, the synchronizing device can be switched between a first working position and a second working position, the synchronizing device is in a first size along the size parallel to the surface of the bearing platform when in the first working position, the synchronizing device is in a second size along the size parallel to the surface of the bearing platform when in the second working position, and the second size is larger than the first size.
Optionally, in the lifting device with a self-locking function, the lower surface of the clamping portion has an inclined surface.
Optionally, the lifting device with a self-locking function further includes: one end of the first pipeline is communicated with a first air port of the cylinder body, and the position of the first air port is lower than the lowest point of the piston head stroke of the piston rod; and the gas transmission port of the gas channel of the control valve is communicated with the other end of the first pipeline.
Optionally, in the above lifting device with a self-locking function, the control valve and the lifting cylinder are both fixedly mounted on the fixed mounting frame.
Optionally, in the lifting device with a self-locking function, one end of the second pipeline is communicated with a second vent of the cylinder, and the position of the second vent is higher than the highest point of the piston head stroke of the piston rod.
Optionally, in the lifting device with a self-locking function, when the synchronizing device is in the first position, the airflow control member protrudes from the control valve; when the synchronization device is in the second position, the airflow control member is threaded into the control valve.
Optionally, in the lifting device with a self-locking function, the synchronizing device is a cam; or the synchronizing device is a synchronizing gear and two synchronizing racks, the two synchronizing racks are respectively meshed with the upper side and the lower side of the synchronizing gear, and one ends of the two synchronizing racks are respectively arranged corresponding to one end of the airflow control part and one end of the sliding rod; or the synchronous device is an elastic air bag which expands after being inflated; or the synchronizing device comprises a wedge-shaped push block and two wedge-shaped push rods, wedge-shaped surfaces are arranged on two sides of the wedge-shaped push block, one ends of the two wedge-shaped push rods are matched with the wedge-shaped surfaces, and the other ends of the two wedge-shaped push rods are respectively arranged corresponding to one end of the air flow control piece and one end of the sliding rod. Other devices capable of synchronously controlling the two ends to move can be used for realizing the scheme of the invention.
Optionally, in the lifting device with a self-locking function, a throttle valve is disposed on the first pipeline and/or the second pipeline.
Optionally, in the lifting device with a self-locking function, an exhaust valve is disposed at the other end of the second pipeline.
Optionally, in the lifting device with a self-locking function, the control valve is further provided with an exhaust port, and when the airflow control member is located at the second position, the air delivery port of the control valve is communicated with the exhaust port of the control valve.
Optionally, in the lifting device with a self-locking function, when the airflow control member is located at the first position, the air delivery port of the control valve and the air exhaust port of the control valve are not communicated.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the lifting platform is lifted under the control of the air circuit, and the synchronous matching of the self-locking device and the control valve is controlled through the synchronizing device, so that when the lifting platform rises, the connecting piece is contacted with the clamping part of the locking piece after reaching a specific height, the locking piece overcomes the elasticity of the self-locking elastic piece and moves towards the fixed mounting frame under the action of the clamping part, the connecting piece continues to rise, the clamping part of the locking piece is clamped into the clamping groove on the right side of the connecting piece under the action of the elasticity of the self-locking elastic piece, the lifting platform is hooked, the stability of the platform is kept, and the bearing platform is prevented from suddenly falling when an air; when the load-bearing platform needs to descend, can move to second operating condition through synchronizer, thereby control the slide bar, drive the locking piece fixed with it and move towards fixed mounting bracket, the joint portion of locking piece breaks away from the joint groove of connecting piece, thereby realize the unblock, air current control piece moves to the screw in state right simultaneously, the disconnection is used for driving the ascending air current of actuating cylinder, remove self-lock device to the locking of platform when unloading atmospheric pressure, realize descending, the platform is reliable and stable, and be convenient for control, the human cost and time have been saved.
Drawings
FIG. 1 is a schematic structural diagram of a locked state according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an unlocked state according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a second embodiment of the present invention in a locked state;
fig. 4 is a schematic structural diagram of an unlocked state according to a second embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a third embodiment of the present invention in a locked state;
fig. 6 is a schematic structural diagram of a third embodiment of the present invention in an unlocked state.
Detailed Description
The following describes the embodiments in further detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1-2, the embodiment describes a lifting device with a self-locking function, which specifically includes: the bearing platform 1 is used for bearing a piece to be lifted, such as a product to be assembled or disassembled; the bearing platform is provided with a lifting cylinder 2, the lifting cylinder 2 comprises a cylinder body 21 and a piston rod 22, and one end of the piston rod 22 is fixedly connected with the bottom of the bearing platform 1, so that the bearing platform 1 can be driven to ascend and descend by controlling the piston rod 22 in the lifting cylinder 2; a self-locking assembly 3 is arranged above the bearing platform 1 and comprises a sliding rod 31, a self-locking elastic piece 32 (specifically a spring in the embodiment, or other elastic devices), a locking piece 33 and a connecting piece 34, wherein the locking piece 33 comprises an installation part and a clamping part, the installation part and the clamping part are mutually vertical, the installation part is fixedly connected with the sliding rod 31 and can slide in the horizontal direction together with the sliding rod 31, and one end of the self-locking elastic piece 32 is connected with the installation part; the connecting piece 34 is fixedly connected with the bearing platform 1, so when the connecting piece 34 is relatively locked with the locking piece 33, the bearing platform 1 is correspondingly locked and kept at a fixed position, and the connecting piece 34 is provided with a clamping groove matched with the clamping part; the fixed mounting frame 4 is relatively fixed with the ground and serves as a supporting device for all parts in the whole lifting device, the sliding rod 31 and the fixed mounting frame 4 are arranged in a relatively sliding mode, and the other end of the self-locking elastic piece 32 is connected with the fixed mounting frame 4; the control valve 5 is internally provided with a gas channel, the control valve 5 can control the connection or disconnection of the gas channel, and the specific principle that the control valve 5 controls the on-off of the gas flow is the prior art and is not described herein again; the air flow control member 51 is arranged on the control valve 5, has two positions relative to the shell of the control valve 5, and when the air flow control member protrudes out of the control valve 5, the air channel is communicated with the lifting cylinder 2 to push the piston rod 22 to lift the bearing platform 1, and when the air flow control member is screwed into the control valve 5, the air channel is not communicated with the lifting cylinder 2, wherein the screwing means that the air flow control member 5 at least partially enters the valve body of the control valve 5 compared with the protruding position; the synchronization device 6 has two sides in contact with the airflow control member 51 and the sliding rod 31, respectively, where the contact means that the two sides of the synchronization device 6 are kept in contact with the airflow control member 51 and the sliding rod 31 during the process of moving the airflow control member 51 from the protruded position to the rotated position.
The synchronizer 6 can be switched between a first working position and a second working position, as shown in fig. 1, when the synchronizer 6 is in the first position, the airflow control member 51 is in a convex state, at this time, the air passage is communicated with the lifting cylinder 2, the piston rod 22 is pushed to lift the bearing platform 1, at this time, the synchronizer 6 is in the first working position along the dimension parallel to the surface of the bearing platform as a first dimension,
as shown in fig. 2, when the synchronizer 6 is in the second position, the airflow control member 5 is in a screwing state, the air passage is not communicated with the lifting cylinder 2, and the platform slowly descends under the action of gravity. The synchronization device 6 has a second dimension in a dimension parallel to the surface of the load-bearing platform in the second working position, the second dimension being larger than the first dimension.
As shown in fig. 1-2, further, the lower surface of the clamping portion has an inclined surface, when the connecting member 34 ascends along with the supporting platform 1, the connecting member 34 contacts the inclined surface of the clamping portion of the locking member 33, the locking member 33 overcomes the elastic force of the self-locking elastic member 32 to move toward the fixed mounting frame 4 under the action of the inclined surface, the connecting member 34 continues to ascend, and the clamping portion of the locking member 33 is clamped into the clamping groove on the right side of the connecting member 34 under the elastic force of the self-locking elastic member 32.
Further, still include: the pipeline system 7 comprises a first pipeline 71, one end of the first pipeline 71 is communicated with the first air port 23 of the cylinder body 2, and the position of the first air port 23 is lower than the lowest point of the piston head stroke of the piston rod 22; two ends of the gas channel of the control valve 5 are respectively communicated with the gas source inlet 53 and the gas transmission port 52, and the gas transmission port 52 is communicated with the other end of the first pipeline 71.
Further, the control valve 5 and the lifting cylinder 2 are both fixedly mounted on the fixed mounting frame 4, or on a frame fixed relative to the fixed mounting frame 4.
Further, the pipeline system 7 further comprises a second pipeline 72, one end of the second pipeline 72 is communicated with the second vent 24 of the cylinder body, and the position of the second vent 24 is higher than the highest point of the piston head stroke of the piston rod.
Further, the synchronizing device 6 is a cam 61, and when the cam 61 is in the first position, the minimum diameter of the cam is in the horizontal position, and when the cam is in the second position, the maximum diameter of the cam is in the horizontal position.
Furthermore, a throttle valve 73 is arranged on the first pipeline 71 and/or the second pipeline 72, so that the speed of the air flow can be controlled, and the device can be prevented from being damaged due to too high speed. Further, the other end of the second conduit is provided with a vent valve 74 for venting gas from the upper chamber of the cylinder during the piston rod raising process.
Further, the control valve 5 is provided with an exhaust port connected to the outside environment, and when the airflow control member is in the second position, the air delivery port 52 of the control valve 5 is in communication with the exhaust port 54 of the control valve. Also, when flow control member 51 is in the first position, transfer port 52 of control valve 5 and exhaust port 54 of the control valve are not in communication.
The specific operation process of this embodiment is as follows:
when the bearing platform 1 needs to be lifted to a specified height, the synchronization device 6 is kept to be located at the first position, the air source conveys air to the air source inlet 53 communicated with the control valve 5, the air passes through the air channel and then goes up and down the air cylinder 2 through the first pipeline 71 from the air conveying port 52, the piston rod 22 is pushed to enable the bearing platform 1 to ascend, when the connecting piece 34 ascends along with the bearing platform 1, the connecting piece 34 is in contact with the inclined surface of the clamping portion of the locking piece 33, the locking piece 33 overcomes the elastic force of the self-locking elastic piece 32 to move rightwards under the action of the inclined surface, the connecting piece 34 continuously ascends, the clamping portion of the locking piece 33 is clamped into the clamping groove on the right side of the connecting piece 34 under the elastic force action of. When it is necessary to lower the loading platform 1, the synchronizing means 6 in this embodiment, i.e., the cam 61 is rotated so that the cam 61 is rotated from the shortest diameter to the vertical line and the longest diameter is rotated from the vertical line to the horizontal line, the slide bar 31 and the air flow control member 51, which are in contact with both sides of the cam 61, are simultaneously moved away from each other. In the process of rightward movement of the sliding rod 31, the locking piece 33 fixed with the sliding rod is driven to move towards the fixed mounting frame 4, the clamping portion of the locking piece 33 is separated from the clamping groove of the connecting piece 34, the bearing platform 1 is separated from locking control, meanwhile, the airflow control piece 51 moves rightward to be in a screwing state, the first channel 71 stops supplying air, the bearing platform 1 descends under the action of gravity, and due to the existence of the throttle valve 73, the descending of the bearing platform 1 can be slowly carried out.
Due to the application of the technical scheme, the embodiment has the following advantages: the lifting of the platform is realized through the control of the air circuit, and the synchronous matching of the self-locking device and the control valve is controlled through the synchronizing device, so that when the platform is lifted up, the bearing platform is hooked by the protective device after reaching a specific height, the stability of the platform is kept, when the platform is required to be lowered, the air pressure can be removed through the synchronizing device, meanwhile, the locking of the self-locking device on the platform is released, the lowering is realized, the platform is stable and reliable, the control is convenient, and the labor cost and time are saved.
In this embodiment, the member to be lifted is a filter box. The filter box is heavy, so that one person can hardly lift and fix the filter box at the same time; if two people do, one person lifts the filter box and the other person is responsible for installing the filter box, but the space for assembling the filter box is too small to accommodate two people to work in the process. And this application utilizes elevating gear with self-locking function goes up and down the rose box then has saved the human cost.
Example 2
As shown in fig. 3-4, in the present embodiment, the synchronizing device 5 includes a synchronizing gear 62 and two synchronizing racks 63, the two synchronizing racks 63 are respectively engaged with the upper and lower sides of the synchronizing gear 62, and one end of each of the two synchronizing racks 63 is respectively disposed corresponding to one end of the airflow control member 51 and one end of the sliding rod 31. In this embodiment, as shown in fig. 3, the state of the synchronization device 5 is in the first position state, and the engaging portion of the locking member 33 is engaged into the engaging groove on the right side of the connecting member 34, so as to lock the supporting platform 1 at a fixed position. When the platform needs to descend, as shown in fig. 4, after the synchronizing gear 62 is rotated, the two synchronizing racks 63 respectively move towards two sides, the sliding rod 31 drives the locking piece 33 fixed with the sliding rod to move towards the right in the process of moving towards the right, the clamping part of the locking piece 33 is separated from the clamping groove of the connecting piece 34, the bearing platform 1 is accordingly released from locking control, meanwhile, the air flow control piece 51 moves towards the right to be in a screwing-in state, the air supply of the first channel 71 is stopped, and the bearing platform 1 slowly descends under the action of gravity.
Example 3
As shown in fig. 5 to 6, the synchronization device includes a wedge-shaped pushing block 64 and two wedge-shaped pushing rods 65, both sides of the wedge-shaped pushing block 64 have wedge surfaces, one end of each of the two wedge-shaped pushing rods 65 is matched with the wedge surface, and the other end of each of the two wedge-shaped pushing rods 65 is respectively arranged corresponding to one end of the air flow control member 51 and one end of the sliding rod 31. As shown in fig. 5, the state of the synchronization device 5 is in the first position state, and the engaging portion of the locking member 33 is engaged into the engaging groove on the right side of the connecting member 34, so as to lock the platform 1 at a fixed position. When the platform needs to descend, as shown in fig. 6, the wedge-shaped pushing block 64 is pressed downwards, and under the matching of the wedge surfaces of the wedge-shaped pushing block 64 and the wedge-shaped pushing rod 65, the sliding rod 31 drives the locking piece 33 fixed with the sliding rod to move rightwards in the process of moving rightwards, the clamping part of the locking piece 33 is separated from the clamping groove of the connecting piece 34, so that the bearing platform 1 is separated from the locking control, meanwhile, the airflow control piece 51 moves rightwards to the screwing-in state, the first channel 71 stops supplying air, and the bearing platform 1 descends slowly under the action of gravity. In other practical embodiments, the synchronous device can be an elastic air bag which expands after being inflated or other devices which can synchronously push the sliding rod 31 and the air flow control element 51, and the details are not repeated herein.
The embodiments and features of the embodiments described herein above can be combined with each other without conflict.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (14)
1. A lifting device with a self-locking function is characterized by comprising:
the bearing platform is used for bearing the piece to be lifted;
the lifting cylinder comprises a cylinder body and a piston rod, and one end of the piston rod is fixedly connected with the bearing platform;
the self-locking assembly comprises a sliding rod, a self-locking elastic piece, a locking piece and a connecting piece, wherein the locking piece comprises an installation part and a clamping part, the installation part is fixedly connected with the sliding rod, and one end of the self-locking elastic piece is connected with the installation part; the connecting piece is fixedly connected with the bearing platform, and a clamping groove matched with the clamping part is formed in the connecting piece;
the sliding rod and the fixed mounting frame are arranged in a sliding mode, and the other end of the self-locking elastic piece is connected with the fixed mounting frame;
a control valve having a gas passage therein;
the air flow control part is protruded out of the control valve, so that the air channel is communicated with the lifting cylinder, the piston rod is pushed to enable the bearing platform to ascend, and the air channel is not communicated with the lifting cylinder when the control valve is screwed in;
and two sides of the synchronizing device are respectively contacted with the airflow control piece and the sliding rod, the synchronizing device can be switched between a first working position and a second working position, the synchronizing device is in a first size along the size parallel to the surface of the bearing platform when in the first working position, the synchronizing device is in a second size along the size parallel to the surface of the bearing platform when in the second working position, and the second size is larger than the first size.
2. The lifting device with self-locking function as claimed in claim 1, wherein the lower surface of the engaging portion has an inclined surface.
3. The lifting device with self-locking function according to claim 1, further comprising:
one end of the first pipeline is communicated with a first air port of the cylinder body, and the position of the first air port is lower than the lowest point of the piston head stroke of the piston rod;
and the gas transmission port of the gas channel of the control valve is communicated with the other end of the first pipeline.
4. The lifting device with self-locking function according to claim 3, wherein the control valve and the lifting cylinder are both fixedly mounted to the fixed mounting frame.
5. The lifting device with self-locking function according to claim 3, further comprising:
one end of the second pipeline is communicated with a second vent of the cylinder body, and the position of the second vent is higher than the highest point of the piston head stroke of the piston rod.
6. The self-locking lifting device as recited in claim 1, wherein the synchronization device is configured such that the airflow control member protrudes from the control valve when the synchronization device is in the first position; when the synchronization device is in the second position, the airflow control member is threaded into the control valve.
7. The lifting device with self-locking function according to claim 1, wherein the synchronizing means is a cam.
8. The lifting device with self-locking function as claimed in claim 1, wherein the synchronizing device is a synchronizing gear and two synchronizing racks, the two synchronizing racks are respectively engaged with the upper and lower sides of the synchronizing gear, and one end of the two synchronizing racks is respectively disposed corresponding to one end of the airflow control member and one end of the sliding rod.
9. The self-locking lifting device as claimed in claim 1, wherein the synchronizing means is an inflatable elastic airbag.
10. The lifting device with self-locking function according to claim 1, wherein the synchronizing device comprises a wedge-shaped pushing block and two wedge-shaped pushing rods, the two sides of the wedge-shaped pushing block are respectively provided with a wedge-shaped surface, one end of each of the two wedge-shaped pushing rods is matched with the wedge-shaped surface, and the other end of each of the two wedge-shaped pushing rods is respectively arranged corresponding to one end of the air flow control part and one end of the sliding rod.
11. The lifting device with the self-locking function according to any one of claims 5, wherein a throttle valve is arranged on the first pipeline and/or the second pipeline.
12. The lifting device with the self-locking function according to claim 5, wherein the other end of the second pipeline is provided with an exhaust valve.
13. The self-locking lifting device as recited in claim 5, wherein the control valve further comprises an exhaust port, and the gas delivery port of the control valve is in communication with the exhaust port of the control valve when the gas flow control member is in the second position.
14. The self-locking lifting device according to claim 5, wherein the gas delivery port of the control valve and the gas exhaust port of the control valve are not in communication when the gas flow control member is in the first position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911266477.3A CN112935741B (en) | 2019-12-11 | 2019-12-11 | Lifting device with self-locking function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911266477.3A CN112935741B (en) | 2019-12-11 | 2019-12-11 | Lifting device with self-locking function |
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| CN112935741A true CN112935741A (en) | 2021-06-11 |
| CN112935741B CN112935741B (en) | 2023-03-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115140634A (en) * | 2022-06-24 | 2022-10-04 | 天津市迅尔自控设备制造有限公司 | Cylinder self-locking device, lifter and control method |
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| CN115140634B (en) * | 2022-06-24 | 2024-05-03 | 天津思睿德自动化科技有限公司 | Cylinder self-locking device, lifter and control method |
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| CN112935741B (en) | 2023-03-24 |
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